jParallax turns nodes into absolutely positioned layers that move in response to the mouse. Depending on their dimensions these layers move at different rates, in a parallaxy kind of way.
With a bit of CSS you can either set up windows to see these layers through, or leave them free to roam about.
jQuery( '.parallax-layer' ).parallax( options );
<ul> <li class="parallax-layer"></li> <li class="parallax-layer"></li> </ul>